JP2011080692A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator capable of suppressing high temperature of an outer casing without providing a radiator. <P>SOLUTION: A vacuum heat insulating panel 32 is provided within a case body 12, and a discharge pipe from a compressor 38 is connected to an evaporation pipe 50. The discharge side of the evaporation pipe 50 is connected to a heat radiation pipe 52 on the back face 25, to a heat radiation pipe 54 on the ceiling face 26, to the heat radiation pipe 56 on the left side face 28, to the heat radiation pipe 58 on the front face 29 and to a heat radiation pipe 60 on the right side face 30. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a refrigerator having a vacuum heat insulating panel.

  A recent refrigerator is known in which a vacuum heat insulating panel and a heat radiating pipe are arranged inside a casing. In such a refrigerator, it is necessary to suppress that the outer box of a housing | casing becomes high temperature by a heat radiating pipe by the heat insulation improvement by a vacuum heat insulation panel. Therefore, as shown in Patent Document 1, a radiator (condenser) is installed between the compressor and the heat radiating pipe.

JP 2006-118792 A

  However, when the radiator is arranged as in Patent Document 1, there is a problem that the internal volume of the refrigerator corresponding to the installation of the radiator is reduced and the volumetric efficiency is deteriorated.

  Then, this invention provides the refrigerator which can suppress that an outer case becomes high temperature, without providing a heat radiator in view of the said problem.

  In the refrigerator having a vacuum heat insulation panel inside the casing, the discharge pipe from the compressor is connected to an evaporation pipe that evaporates defrost water, and the discharge side of the evaporation pipe is connected to the rear surface of the casing or It is connected to a heat radiating pipe disposed on the ceiling surface, and the discharge side of the heat radiating pipe disposed on the back surface or the ceiling surface is connected to a heat radiating pipe disposed on the front surface or side surface of the housing. It is a refrigerator.

  According to the present invention, safety can be ensured without providing a heat radiator because a portion where the temperature is increased by the heat radiating pipe is in a region where it is difficult for the user to touch the outer box.

It is a perspective view which shows arrangement | positioning of each member of the refrigerating cycle of the refrigerator which concerns on one Example of this invention. It is explanatory drawing of a refrigerating cycle. It is a longitudinal cross-sectional view of a refrigerator. It is a perspective view of a machine room. It is a cross-sectional view of an outer box, a heat radiating pipe, a vacuum heat insulation panel, and an inner box.

  Hereinafter, the refrigerator 10 of one Example of this invention is demonstrated based on FIGS.

  The structure of the refrigerator 10 of a present Example is demonstrated using FIG.1, FIG.3, FIG.4. FIG. 1 is a perspective view showing the arrangement of each member of the refrigeration cycle of the refrigerator 10 according to the present embodiment, FIG. 3 is a longitudinal sectional view of the refrigerator 10, and FIG. 4 is a perspective view of the machine room 34.

  As shown in FIG. 3, the refrigerator 10 is configured such that the casing 12 of the refrigerator 10 is configured by combining an outer box 14 and an inner box 16, and the inside of the casing 12 is a refrigerator room 18 and a vegetable room in order from the top. 20, an ice making room 22 and a freezing room 24. A vacuum heat insulation panel 32 is attached to the inner surface of the ceiling surface 26 and both side surfaces 28, 30 of the outer box 14, and a foamed urethane 82 for heat insulation is provided between the vacuum heat insulation panel 32 and the inner box 16. Injected foam.

  As shown in FIG. 4, in a machine room 34 below the back surface 25 of the housing 12, a compressor 38 constituting a refrigeration cycle 36, an evaporating dish 44 for collecting and evaporating defrost water, a machine room A fan 46 or the like for cooling the air is provided.

  As shown in FIG. 1, a refrigerator 12 (hereinafter simply referred to as “R EVA”) 40 and a freezer compartment evaporator (hereinafter simply referred to as “F EVA”) 42 are provided inside the rear surface of the housing 12. Has been placed. The R EVA 40 cools the refrigerator compartment 18 and the vegetable compartment 20, and the F EVA 42 cools the ice making chamber 22 and the freezer compartment 24.

  Next, the configuration of the refrigeration cycle 36 will be described with reference to FIGS. 1 and 2. FIG. 2 is a block diagram of the refrigeration cycle.

  As shown in FIG. 2, the discharge pipe of the compressor 38 is connected to the evaporation pipe 50 via the muffler 48. The evaporation pipe 50 is disposed inside the evaporation dish 44 and forcibly evaporates the defrost water.

  As shown in FIGS. 1 and 2, the discharge side of the evaporation pipe 50 is connected to a heat radiating pipe 52 disposed on the back surface 25. The discharge side of the heat radiating pipe 52 disposed on the back surface 25 is connected to a heat radiating pipe 54 disposed on the ceiling surface 26 by being bent a plurality of times. The discharge side of the heat radiating pipe 54 disposed on the ceiling surface 26 is connected to a heat radiating pipe 56 disposed on the left side surface 28 by being bent a plurality of times. The heat radiating pipe 56 disposed on the left side surface 28 is connected to a heat radiating pipe (dew proof pipe) 58 disposed on the front surface 29 by being bent a plurality of times. The discharge side of the heat radiating pipe 58 disposed on the front surface 29 is connected to a heat radiating pipe 60 disposed on the right side surface 30 by being bent multiple times.

  As shown in FIG. 5, the heat radiating pipes 54, 56, and 60 disposed on the ceiling surface 26, the left side surface 28, and the right side surface 30 are disposed along the grooves 80 provided in the vacuum heat insulating panel 32. As a result, the heat radiating pipes 54, 56, and 60 can be fixed, and heat can be radiated only in the direction of the outer box 14.

  The discharge side of the heat radiating pipe 60 disposed on the right side surface 30 is connected to the inlet of the three-way valve 64 via a dryer 62. A refrigeration main capillary tube 66 is connected to a first outlet of the three-way valve 64, and an R EVA 40 is connected to the refrigeration main capillary tube 66. On the other hand, a freezing main capillary tube 68 is connected to the second outlet of the three-way valve 64, and the F EVA 42 is connected to the freezing main capillary tube 68.

  An accumulator 70 and a suction pipe 72 are connected to the outlet side of the R evaporator 40, and a check valve 74 is further connected. On the other hand, an accumulator 76 and a suction pipe 78 are also connected to the outlet side of the F EVA 42, and further connected to a check valve 74. The check valve 74 is connected to the suction pipe of the compressor 38.

  In this refrigeration cycle 36, the three-way valve 64 is switched to cool the refrigerant from the compressor 38 by alternately flowing the R-eva 40 or the F-eva 42, and the refrigerator compartment 18, the vegetable compartment 20, the ice-making compartment 22, and the freezer The chamber 24 is cooled to a predetermined temperature.

  In this case, the refrigerant discharged from the compressor 38 becomes high temperature and reaches from the muffler 48 to the evaporation pipe 50. First, the high-temperature refrigerant evaporates the defrosted water accumulated in the evaporating dish 44, and thereafter, the refrigerant is a heat radiation pipe 52 on the back surface 25, a heat radiation pipe 54 on the ceiling surface 26, and a heat radiation pipe 56 on the left side surface 28. To the heat radiation pipe 58 on the front surface 29 and the heat radiation pipe 60 on the right side surface 30.

  According to the present embodiment, the refrigerant whose temperature has decreased by evaporating the defrost water flows in the order of the back surface 25 and the ceiling surface 26. The back surface 25 and the ceiling surface 26 are not touched by the user of the refrigerator 10, and safety can be secured even if a slightly high-temperature refrigerant flows through the heat radiating pipes 52 and 54, and the rear surface 25 and the ceiling surface 26 flow through the back surface 25 and the ceiling surface 26. During this time, the temperature of the refrigerant further decreases. Thereafter, the refrigerant whose temperature has decreased flows to the front surface 29 and the side surfaces 28 and 30 that are touched by the user's hand, so that the safety of the user can be ensured. In particular, in the case of the present embodiment, as shown in FIG. 5, the heat radiating pipes 54, 56, and 60 disposed on the ceiling surface 26, the left side surface 28, and the right side surface 30 are formed in the groove 80 provided in the vacuum heat insulating panel 32. Therefore, heat is not transmitted from the heat radiating pipes 54, 56, and 60 to the inside of the box, and the inside temperature does not rise, and heat is transmitted only to the outer box 14 on the outside. However, as described above, since the refrigerant having a lowered temperature flows, the surface of the outer box 14 does not become hot, and the safety of the user can be sufficiently ensured.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist thereof.

  For example, in the above-described embodiment, the order in which the heat radiating pipes are connected is the back surface 25, the ceiling surface 26, the left side surface 28, the front surface 29, and the right side surface 30. If a high-temperature refrigerant flows through 26, the subsequent order is not limited to this. Even in this case, the temperature of the front surface 29 and both side surfaces 28 and 30 of the refrigerator 10 does not become high, and the safety of the user can be ensured.

  DESCRIPTION OF SYMBOLS 10 ... Refrigerator, 12 ... Housing, 14 ... Outer box, 32 ... Vacuum insulation panel, 36 ... Refrigerating cycle, 38 ... Compressor, 50 ... Evaporating pipe, 52 , 54, 56, 58, 60 ... Radiating pipe

Claims (2)

In a refrigerator with a vacuum insulation panel inside the housing,
Connect the discharge pipe from the compressor to the evaporation pipe that evaporates the defrost water,
The discharge side of the evaporation pipe is connected to a heat radiating pipe disposed on the back surface or ceiling surface of the housing,
The discharge side of the heat radiating pipe disposed on the back surface or the ceiling surface is connected to the heat radiating pipe disposed on the front surface or side surface of the housing.
A refrigerator characterized by that. The radiator pipe disposed on the ceiling surface is connected to the discharge side of the radiator pipe disposed on the back surface.
The refrigerator according to claim 1.

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